Ltft bank 2 help
Ltft bank 2 help Working on my cousins 98 ta
When the car is cold(before o2s come into play) it runs great
When o2s switch bank 2 goes crazy and car wants to die.
I have switched o2s side to side and problem stays on bank 2
What all could this be?
When the car is cold(before o2s come into play) it runs great
When o2s switch bank 2 goes crazy and car wants to die.
I have switched o2s side to side and problem stays on bank 2
What all could this be?
Might be a short in the wiring somewhere. Check all of the wires from the O2 plug back up past the exhaust (to make sure it didn't get burnt). Also, do you have any exhaust leaks? Might be worth looking around the EGR area or AIR injection areas. The last thought would maybe be a bad PCM. If you have another one to swap in or a friend with another 98 car, that may tell a lot. My T/A had a PCM go bad and all kinds of things quit working and acted haywire.
scanner? Im assuming you have a scanner? Any mods on the car? Switching o2's sounds like shotgun troubleshooting unless your scanner is telling you that possibly a o2 is bad. I would get it scanned, atleast at autozone or something if you don't have a scanner and go from there. Im dealing with my own issue with my car and unfortunatly im sitting at the p0300 code, random misfire. Waiting for a buddy from a GM dealership to head down and scan my car to see really whats going on....
Teching In
Joined: Mar 2013
Posts: 27
Likes: 0
From: Fresno,CA
Define crazy? Do the LTFT and STFT on bank 2 go high or low? What does bank 1 read? What does the rear o2 read when that happens(if there is one and it has a cat)
Teching In
Joined: Mar 2013
Posts: 27
Likes: 0
From: Fresno,CA
Sounds like a huge exhaust leak on bank 2, but you should be able to hear it if that's the cause. If you can't hear it, check wiring as mentioned above. Make sure it's not melted to the header.
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